Project Planning

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These questions are derived from the Self Test Software Practice Test for the Project Management Institute exam #PMP3ED – Project Management Professional Third Edition

 

Objective : Project Planning
SubObjective : Schedule Development

 

 

 

Single Answer, Multiple Choice

 

One of your project’s tasks has an Early Start of week 9, an Early Finish of week 15, a Late Start of week 12, and a Late Finish of week 18. What is the task’s float?

 

 

  1. 3
  2. 6
  3. 9
  4. 12

 

Answer:

 

A. 3

 

Tutorial:

 

The task’s float is 3. Float, or slack is defined as the amount of time that a particular task can slip before the critical path is affected. Basically, this is how long a task can be delayed without affecting the overall finish date of the project. You can calculate the slack for an activity using LS – ES or LF – EF. In this scenario, the task has a Late Start of week 12 and an Early Start of week 9. You can use the formula LS – ES, which yields float for the task of 12 – 9, or 3. Using the formula LF – EF yields an identical result.

 

All of the other options are incorrect because they do not reflect the correct float calculation.

 

Reference:

1. A Guide to the Project Management Body of Knowledge – PMBOK Guide 3rd Edition – Project Time Management – 6.5.2 Schedule Development: Tools and Techniques

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